Explain about the partitioning, shuffle and sort phase in MapReduce?
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Mention what is the next step after mapper or maptask?
How to compress mapper output in Hadoop?
Explain the differences between a combiner and reducer
How does MapReduce framework view its input internally?
What are ‘maps’ and ‘reduces’?
For a job in Hadoop, is it possible to change the number of mappers to be created?
Explain the Reducer's reduce phase?
What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?
What combiners are and when you should use a combiner in a mapreduce job?
What are the main components of MapReduce Job?
When should you use sequencefileinputformat?
Explain Working of MapReduce?
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